Watch case with strap adaptor



FIG. 1 is a rear elevational view of a watch case with strap adaptor showing my new design;

FIG. 2 is a top plan view;

FIG. 3 is a right side elevational view;

FIG. 4 is a left side elevational view;

FIG. 5 is a bottom plan view, and

FIG. 6 is a front elevational view.

The broken line showing of strap portions in FIGS. 1-6 are environmental only and form no part of the claimed design. 

The ornamental design for a watch case with strap adaptor, as shown. 